Weather Atlas: United Kingdom weather forecast and Climate information. United Kingdom weather and climate data - from current weather and hourly forecast, detailed daily and 10 day forecast to long range monthly outlook of temperature, humidity, rainfall, snowfall, daylight, sunshine, UV index and sea temperature. Country: United Kingdom [2299491]Weather is the state of the atmosphere and describes the short-term conditions of temperature, humidity, atmospheric pressure, wind, precipitation, atmospheric particle count and other meteorological variables in a given region.